Jul 11 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications
Introduction
Machining of tool steels into a usable product can be achieved through machine tools such as mills and lathes. The goal of machining tool steel is to produce a tool of the proper shape and the proper dimensions.
AISI T2 tool steel is an air-hardening medium alloy tool steel that has wear resistance intermediate between the high carbon chromium tool steels and oil hardening tool steels. But it offers good toughness and exhibits minimal distortion on hardening.
The data below will provide an overview of grade T2 tool steels.
Chemical Composition
The chemical composition of T2 tool steels is outlined in the following table.
|
Element |
Content (%) |
|
Iron, Fe |
91.55 |
|
Chromium, Cr |
5.25 |
|
Molybdenum, Mo |
1.1 |
|
Carbon, C |
1 |
|
Manganese, Mn |
0.85 |
|
Vanadium, V |
0.25 |
Physical Properties
The following table shows the physical properties of T2 tool steels.
|
Properties |
Metric |
Imperial |
|
Density |
7.86 g/cm3 |
0.284 lb/in3 |
Mechanical Properties
The mechanical properties of T2 tool steels are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Modulus of elasticity |
207 GPa |
30000 ksi |
|
Hardness, Rockwell C |
60-62 |
60-62 |
|
Hardness, Brinell |
197-241 |
197-241 |
|
Charpy impact |
53 J |
39.1 ft.lb |
Thermal Properties
The thermal properties of T2 tool steels are given in the following table
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@20-260°C/68-500°F) |
10.6 µm/m°C |
5.89 µin/in°F |
Applications
The following are the list of applications of T2 tool steels:
-
Turning and slotting tools
-
Broaching tools
-
Reamers
-
Threading dies
-
Twist drills
-
Tapes.